The calculated distance (air line) between Düsseldorf and Marburg an der Lahn is approximately 91 miles respectively 147 kilometers.
By car or train, the actual journey to Marburg an der Lahn is certainly longer, as only the direct route (as the crow flies) between Düsseldorf and Marburg an der Lahn has been calculated here.
Air line (approximately)
147 kilometers
79 nautical miles